org.apache.james.jmap.model.OldKeyword Maven / Gradle / Ivy

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package org.apache.james.jmap.model;

import java.util.Arrays;
import java.util.Optional;

import javax.mail.Flags;

import org.apache.james.util.OptionalUtils;
import org.apache.james.util.StreamUtils;

import com.github.steveash.guavate.Guavate;
import com.google.common.base.MoreObjects;
import com.google.common.base.Objects;

public class OldKeyword {

    public static class Builder {
        private Optional isUnread;
        private Optional isFlagged;
        private Optional isAnswered;
        private Optional isDraft;
        private Optional isForwarded;

        private Builder() {
            isUnread = Optional.empty();
            isFlagged = Optional.empty();
            isAnswered = Optional.empty();
            isDraft = Optional.empty();
            isForwarded = Optional.empty();
        }

        public Builder isFlagged(Optional isFlagged) {
            this.isFlagged = isFlagged;
            return this;
        }

        public Builder isFlagged(boolean isFlagged) {
            return isFlagged(Optional.of(isFlagged));
        }

        public Builder isUnread(Optional isUnread) {
            this.isUnread = isUnread;
            return this;
        }

        public Builder isUnread(boolean isUnread) {
            return isUnread(Optional.of(isUnread));
        }

        public Builder isAnswered(Optional isAnswered) {
            this.isAnswered = isAnswered;
            return this;
        }

        public Builder isAnswered(boolean isAnswered) {
            return isAnswered(Optional.of(isAnswered));
        }

        public Builder isDraft(Optional isDraft) {
            this.isDraft = isDraft;
            return this;
        }

        public Builder isDraft(boolean isDraft) {
            return isDraft(Optional.of(isDraft));
        }

        public Builder isForwarded(Optional isForwarded) {
            this.isForwarded = isForwarded;
            return this;
        }

        public Builder isForwarded(boolean isForwarded) {
            return isForwarded(Optional.of(isForwarded));
        }

        public Optional computeOldKeyword() {
            if (isAnswered.isPresent() || isFlagged.isPresent() || isUnread.isPresent() || isForwarded.isPresent() || isDraft.isPresent()) {
                return Optional.of(new OldKeyword(isUnread, isFlagged, isAnswered, isDraft, isForwarded));
            }

            return Optional.empty();
        }

    }

    public static Builder builder() {
        return new Builder();
    }

    private final Optional isUnread;
    private final Optional isFlagged;
    private final Optional isAnswered;
    private final Optional isDraft;
    private final Optional isForwarded;

    private OldKeyword(Optional isUnread, Optional isFlagged, Optional isAnswered,
                      Optional isDraft, Optional isForwarded) {
        this.isUnread = isUnread;
        this.isFlagged = isFlagged;
        this.isAnswered = isAnswered;
        this.isDraft = isDraft;
        this.isForwarded = isForwarded;
    }

    public Optional isUnread() {
        return isUnread;
    }

    public Optional isFlagged() {
        return isFlagged;
    }

    public Optional isAnswered() {
        return isAnswered;
    }

    public Optional isDraft() {
        return isDraft;
    }

    public Optional isForwarded() {
        return isForwarded;
    }

    public Flags applyToState(Flags currentFlags) {
        Flags newStateFlags = new Flags();

        if (isFlagged().orElse(currentFlags.contains(Flags.Flag.FLAGGED))) {
            newStateFlags.add(Flags.Flag.FLAGGED);
        }
        if (isAnswered().orElse(currentFlags.contains(Flags.Flag.ANSWERED))) {
            newStateFlags.add(Flags.Flag.ANSWERED);
        }
        if (isDraft().orElse(currentFlags.contains(Flags.Flag.DRAFT))) {
            newStateFlags.add(Flags.Flag.DRAFT);
        }
        if (isForwarded().orElse(currentFlags.contains(new Flags("$Forwarded")))) {
            newStateFlags.add(new Flags("$Forwarded"));
        }
        boolean shouldMessageBeMarkSeen = isUnread().map(b -> !b).orElse(currentFlags.contains(Flags.Flag.SEEN));
        if (shouldMessageBeMarkSeen) {
            newStateFlags.add(Flags.Flag.SEEN);
        }
        Arrays.stream(currentFlags.getUserFlags())
            .forEach(newStateFlags::add);
        if (currentFlags.contains(Flags.Flag.RECENT)) {
            newStateFlags.add(Flags.Flag.RECENT);
        }
        if (currentFlags.contains(Flags.Flag.DELETED)) {
            newStateFlags.add(Flags.Flag.DELETED);
        }
        return newStateFlags;
    }

    public Keywords asKeywords() {
        return Keywords.factory()
            .fromSet(StreamUtils
                .flatten(
                    OptionalUtils.toStream(isAnswered.filter(b -> b).map(b -> Keyword.ANSWERED)),
                    OptionalUtils.toStream(isDraft.filter(b -> b).map(b -> Keyword.DRAFT)),
                    OptionalUtils.toStream(isForwarded.filter(b -> b).map(b -> Keyword.FORWARDED)),
                    OptionalUtils.toStream(isFlagged.filter(b -> b).map(b -> Keyword.FLAGGED)),
                    OptionalUtils.toStream(isUnread.filter(b -> !b).map(b -> Keyword.SEEN)))
                .collect(Guavate.toImmutableSet()));
    }

    @Override
    public final boolean equals(Object other) {
        if (other instanceof OldKeyword) {
            OldKeyword oldKeyword = (OldKeyword) other;
            return Objects.equal(isUnread, oldKeyword.isUnread)
                && Objects.equal(isFlagged, oldKeyword.isFlagged)
                && Objects.equal(isAnswered, oldKeyword.isAnswered)
                && Objects.equal(isDraft, oldKeyword.isDraft)
                && Objects.equal(isForwarded, oldKeyword.isForwarded);
        }
        return false;
    }

    @Override
    public final int hashCode() {
        return Objects.hashCode(isUnread, isFlagged, isAnswered, isDraft, isForwarded);
    }

    @Override
    public String toString() {
        return MoreObjects.toStringHelper(this)
                .add("isUnread", isUnread)
                .add("isFlagged", isFlagged)
                .add("isAnswered", isAnswered)
                .add("isDraft", isDraft)
                .add("isForwarded", isForwarded)
                .toString();
    }

}